A107424 - cp's OEIS frontend

A107424 Triangle read by rows: T(n, k) is the number of primitive (period n) n-bead necklace structures with k different colors. Only includes structures that contain all k colors.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	2
9	2
10	1
11	0
12	3
13	5
14	2
15	1
16	0
17	5
18	17
19	13
20	3
21	1
22	0
23	9
24	43
25	50
26	20
27	3
28	1
29	0
30	16
31	124
32	220
33	136
34	36
35	4
36	1
37	0
38	28
39	338
40	866
41	773
42	296
43	52
44	4
45	1
46	0
47	51
48	941
49	3435
50	4280
51	2303
52	596
53	78
54	5
55	1
56	0
57	93
58	2591
59	13250
60	22430
61	16317
62	5817
63	1080
64	105
65	5
66	1
67	0
68	170
69	7234
70	51061

[1, 0, 1, 0, 1, 1, 0, 2, 2, 1, 0, 3, 5, 2, 1, 0, 5, 17, 13, 3, 1, 0, 9, 43, 50, 20, 3, 1, 0, 16, 124, 220, 136, 36, 4, 1, 0, 28, 338, 866, 773, 296, 52, 4, 1, 0, 51, 941, 3435, 4280, 2303, 596, 78, 5, 1, 0, 93, 2591, 13250, 22430, 16317, 5817, 1080, 105, 5, 1, 0, 170, 7234, 51061]

cp's OEIS Frontend

A107424 Triangle read by rows: T(n, k) is the number of primitive (period n) n-bead necklace structures with k different colors. Only includes structures that contain all k colors.

Table of values

List of values